Method of finishing knit goods.



N0. 797,659. 7 I PATENTED AUG. 22, 1905. T. S. BARON.

METHOD OF FINI$HING KNIT GOODS.

APPLIOATION FILED THE. 6. 1906.

III/III/IIIIIIIIIIIMIIII/ OFFIOE.

THEODORE S. BARON, OF NEIV YORK, N. Y., ASSIGNOR TO AMERICAN KNIT GOODS MANUFAO URIN G COMPANY, OF BROOKLYN, NEW YORK, A COR- PORATION OF NEW YORK.

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed February 6, 1905. Serial No. 244,306.

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Be it known that I, TunODoRn S. BARON, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented a new and useful Method of Finishing Knit Goods, of which the following is a specification.

The object of this invention is to provide a new method for finishing knit cotton goods, so that the same will have an attractive and peculiarly-polished appearance, representing somewhat mercerized cotton.

The method is practiced as follows: The goods are first knit into a long tube. This tube is then subjected to violent extremes of temperature, first hot and then cold. Then the same is hot-ironed. I have found that by subjecting the goods to violent extremes of temperature in this way the fibers of the cotton assume a peculiar condition, so that when they are ironed a high polish will be imparted to the fabric, giving the same almost the appearance of mercerized cotton. The fabric can be submitted easily to these violent extremes of temperature in the operations of washing and dyeing the same.

In the accompanying drawings is shown apparatus which may be employed to carry out my invention.

Referring to said drawings, Figure 1 is a sectional diagrammatic view illustrating the way the washing maybe carried on. Fig. 2 is a similar view illustrating the way the dyeing may be carried on, and Fig. 3 is a similar view illustrating the way the goods may be ironed.

In Fig. l is shown a washing-box divided into six compartments. Running in each of these compartments is a pair of rollers, which are preferably made of copper. The tube of goods is stitched together at its ends, so as to form an endless piece. The same is led around a roll and then progressively around the rollers 60 a in the first compartment, 5 b in the second compartment, 0 0 in the third compartment, (Z (Z in the fourth compartment, 6 e in the fifth compartment, and ff in the sixth compartment, up around a roller 11, back to the starting-roller 10. The water in the first compartment is kept cool. In the second compartment the water is warmed up to some considerable extent. In the third compartment the water is warmed up to a higher degree. The'rolls (Z (Z and a 0 in the fourth and fifth compartments are perforated, and live steam is admitted through the journals, so that the water in these compartments will be kept very hot, and the rolls will be kept at a very high temperature, so that the cloth or fabric as it passes over the same will be brought to an extremely high temperatu re; The water in the sixth compartment is kept cool. By running the fabric a largenumber of times through this apparatus it will be subjected to violent extremes of temperature. In practice I have found the following temperatures to produce good results: for the first and last tanks to Fahrenheit; for the second to 150 Fahrenheit; the third to 200 Fahrenheit, and fourth and fifth as near boiling-point as possible; but it should be understood that these temperatures may be varied within limits without departing from my invention. The fabric is then taken to adyeing-vat, which may be constructed as shown in Fig. 2.'

This apparatus consists of a dye-tub having two compartments, in the larger of which the dye is contained and in the smaller of which water placed and kept at a temperature about equal to the water in the first and last compartments of the washing apparatus. The fabric is led so as to pass first between drawing-rollers 20 20, then up around a perforated copper drum 21, which has steam admitted to its journals, down between two copper perforated rollers 22 22, which also have steam admitted to their journals, and then down around a roller 23 into the smaller compartment in which the cold water is circulated. The fabric then passes up around a guidingroll 24, down around a guiding-roll 25, into the bottom of the larger compartment or dye-vat to a roll 26 at the other end of the dye-vat, and then over the usual drying-slots 27 to the original drivingrollers 20 20. In this way as the fabric is repeatedly passed through the dyeing apparatus it will be subjected to violent extremes of temperature. The fabric is then taken and slipped on a tube T, as shown in Fig. 2, through which hot air may be blown, and the fabric is then drawn between pairs of heated ironing-rollers 30 30, 31 31, and 32 32 and is finally wound into a roll W. These rollers are preferably heated, so as to present progressively hotter surfaces to the fabric.

By ironing the fabric after it has been submitted to the extremes of temperature, as above described, a handsome finish will be given to the goods, which I attribute to the changes in the fibers which they assume by being subjected to violent temperature changes.

The apparatus herein shown is merely illustrative of one way of practicing my invention. The same may be practiced with many other forms of apparatus.

I have been unable to ascertain the scientific nature of the change which my process causes in the fibers, but repeated treatments of fabric according to my process shows the invariable result to be that the fabric takes on an appearance closely akin to that of mercerized cotton.

Having shown and described my invention in the above specification, what I desire to secure by Letters Patent of the United States 1. The method of finishing knit cotton goods which consists in repeatedly subjecting the same to violent and sudden extremes of temperature in the washing process and then ironing the same.

2. The method of finishing knit cotton goods 'rulpua which consists in repeatedly subjecting the same to violent and sudden temperature changes, in the operations of washing and dyeing, and then ironing the same.

3. The method of finishing knit cotton goods consisting in repeatedly passing the goods successively through a series of separate bodies of liquid maintained at extremes of temperature, whereby the goods will be repeatedly subjected to a succession of violent and sudden changes in temperature, and then hotironing the goods so treated.

at. The method herein described of finishing knit cotton goods consisting in repeatedlypassing the goods successively through a series of separate bodies of water maintained at extremes of temperature, then dyeing the goods in the same manner, and then hot-ironing the goods, as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

THEODORE S. BARON.

Witnesses:

EDGAR M. FREDENBERG, MARK H. EISNER. 

